Pump



FIG. 1 is a perspective view of a pump showing our new design;

FIG. 2 is a front elevational view;

FIG. 3 is a right side elevational view;

FIG. 4 is a left side elevational view;

FIG. 5 is a rear elevational view;

FIG. 6 is a top plan view; and,

FIG. 7 is a bottom plan view.

The portions of the figures shown in broken lines are not part of the claimed design and are for illustration only. 

CLAIM The ornamental design for a pump, as shown and described. 